Novel La0.8Sr1.2Fe0.9Cu0.1O4±δ (LSFC) oxides for application as cathodes in SOFCs were prepared with two different synthetic methods: solid‐state‐reaction (SSR) and molten citrate (MC). The XRD, ICP‐OES, SEM, laser granulometry and TG‐DTA techniques were applied for the physico‐chemical characterization. 4‐points DC conductivity measurements and EIS experiments were performed in the electrochemical characterization. Compared to SSR, the MC method allowed to obtain finer powders (∼2 μm vs. ∼5 μm) and required lower calcination temperatures (1,000 °C vs. 1,400 °C). The SSR and MC samples showed similar conductivity (30 S cm−1 at 700 °C) and polarization resistance (1.7 Ω cm2 at 700 °C). The EIS results were analyzed with the equivalent circuits method, and with a physically‐based model for the simulation of the impedance spectra, which indicated that the oxygen reduction mechanism involved the TPB. The MC method revealed preferential, thanks to the lower calcination temperature.

(2018). Copper Doped La0.8Sr1.2FeO4Ruddlesden-Popper SOFC Cathode: Synthesis, Characterization and Model Analysis [journal article - articolo]. In FUEL CELLS. Retrieved from http://hdl.handle.net/10446/122423

Copper Doped La0.8Sr1.2FeO4Ruddlesden-Popper SOFC Cathode: Synthesis, Characterization and Model Analysis

Pelosato, Renato;Natali Sora, Isabella
2018

Abstract

Novel La0.8Sr1.2Fe0.9Cu0.1O4±δ (LSFC) oxides for application as cathodes in SOFCs were prepared with two different synthetic methods: solid‐state‐reaction (SSR) and molten citrate (MC). The XRD, ICP‐OES, SEM, laser granulometry and TG‐DTA techniques were applied for the physico‐chemical characterization. 4‐points DC conductivity measurements and EIS experiments were performed in the electrochemical characterization. Compared to SSR, the MC method allowed to obtain finer powders (∼2 μm vs. ∼5 μm) and required lower calcination temperatures (1,000 °C vs. 1,400 °C). The SSR and MC samples showed similar conductivity (30 S cm−1 at 700 °C) and polarization resistance (1.7 Ω cm2 at 700 °C). The EIS results were analyzed with the equivalent circuits method, and with a physically‐based model for the simulation of the impedance spectra, which indicated that the oxygen reduction mechanism involved the TPB. The MC method revealed preferential, thanks to the lower calcination temperature.
journal article - articolo
Cordaro, Giulio; Donazzi, Alessandro; Pelosato, Renato; Cristiani, Cinzia; Dotelli, Giovanni; Natali Sora, Isabella
(2018). Copper Doped La0.8Sr1.2FeO4Ruddlesden-Popper SOFC Cathode: Synthesis, Characterization and Model Analysis [journal article - articolo]. In FUEL CELLS. Retrieved from http://hdl.handle.net/10446/122423
File allegato/i alla scheda:
File Dimensione del file Formato  
Cordaro_et_al-2018-Fuel_Cells.pdf

Solo gestori di archivio

Versione: publisher's version - versione editoriale
Licenza: Licenza default Aisberg
Dimensione del file 1.34 MB
Formato Adobe PDF
1.34 MB Adobe PDF   Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/122423
Citazioni
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact